(19)
(11) EP 0 306 923 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.04.1991 Bulletin 1991/15

(43) Date of publication A2:
15.03.1989 Bulletin 1989/11

(21) Application number: 88114619.5

(22) Date of filing: 07.09.1988
(51) International Patent Classification (IPC)4B29C 67/22, B29C 49/00, B29C 49/48, B29C 69/02
(84) Designated Contracting States:
BE CH DE ES FR GB GR LI NL SE

(30) Priority: 07.09.1987 IT 2181587

(71) Applicant: MONTEDIPE S.r.l.
I-20124 Milan (IT)

(72) Inventors:
  • Cocca, Vincenzo
    I-20032 Cormano Milan (IT)
  • Casoli, Fiorenzo
    I-21029 Vergiate Varese (IT)
  • Frattini, Giovanni
    I-21100 Varese (IT)
  • Brogi, Walter
    I-52025 Montevarchi Arezzo (IT)

(74) Representative: Barz, Peter, Dr. et al
Patentanwälte Dr. V. Schmied-Kowarzik Dipl.-Ing. G. Dannenberg Dr. P. Weinhold Dr. D. Gudel Dipl.-Ing. S. Schubert Dr. P. Barz Siegfriedstrasse 8
80803 München
80803 München (DE)


(56) References cited: : 
   
       


    (54) Shaped articles of thermoplastic material and process for producing them


    (57) There are described shaped articles consisting of an outer hollow envelope of a thermoplastic material and of an inner thermally insulating mass of polyurethane, foamed in situ, bonded to the polymeric envelope as to form one unique struc­tural body.
    The process for producing them comprises the blow moulding of the outer hollow envelope and the subsequent introduction inside the interior chamber of a reactive polyurethane blend, which forms in situ the heat insulation consisting of foamed polyurethane.







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